Shortround6
Major General
The whole point of the P-38 design was that at the time of it's design NO single engine could supply enough power to meet the performance specification (weapons load, speed and endurance) which forced the twin engine solution.
If Kelly had had a 1500-1600hp reliable engine available in 1937-38-39 when design and development work was going on for the P-38 the P-38 might very well have been a single fighter.
The US Army had not requested a twin. With no such engine available (or projected in a reasonable timeline at the time , the only solution was to use a pair of 1000-1100 hp engines and use the extra power to counter the greater weight and drag of a twin engine design in order to give the US Army the endurance they requested.
P-38 development lagged, in part due the crash of the sole prototype and engine development may have been faster than anticipated by Kelly. In part due to the development of higher performance number fuel/s.
If Kelly had had a 1500-1600hp reliable engine available in 1937-38-39 when design and development work was going on for the P-38 the P-38 might very well have been a single fighter.
The US Army had not requested a twin. With no such engine available (or projected in a reasonable timeline at the time , the only solution was to use a pair of 1000-1100 hp engines and use the extra power to counter the greater weight and drag of a twin engine design in order to give the US Army the endurance they requested.
P-38 development lagged, in part due the crash of the sole prototype and engine development may have been faster than anticipated by Kelly. In part due to the development of higher performance number fuel/s.